How Training Systems Share AI Knowledge Without Sharing Private Student Data
This patent describes a system where different student training centers can improve their AI models by sharing general learning patterns, not private student data, to make training better for everyone.
Patent Number
US 11915111
Status
Active
Filing Date
March 15, 2023
Grant Date
February 27, 2024
Expiration
March 15, 2043
Claims
27
Assignee
CAE
Inventors
Jean-François DELISLE, Navpreet Singh, Ben Winokur
Citations
1 forward · 2 backward
What it covers
This system uses federated machine learning to improve student training across multiple locations while protecting privacy. A first training center uses an AI module to adapt training for its students and develops a 'first learning model' based on their performance metrics (Claim 1). A second training center extracts 'statistical properties' from its students' performance metrics, then uses a 'data simulator module' to create fake, but realistic, performance data (Claim 1). This simulated data is used to build a 'second learning model'. A central 'federation computing device' then combines the 'model weights' from both the first and second learning models to create or refine a 'federated model'. For example, in a flight simulator (Claim 8), pilot performance data like control yoke movements (Claim 8) could be used to improve the AI's ability to adapt training for new pilots at different flight schools.
What it doesn't cover
- —Does not cover systems that share raw student performance data directly between training centers.
- —Does not cover machine learning systems that centralize all student performance data for model training.
- —Does not cover federated learning approaches that exchange full local models instead of just model weights.
- —Does not cover training systems where the AI does not adapt individualized training to each student.
- —Does not cover systems that don't use simulated data generated from statistical properties for a local model's contribution.
The clever bit
The clever part is how the system allows a training center to contribute to a shared AI model without revealing any actual student data. Instead of sending raw performance metrics, it extracts statistical properties and then generates simulated data, which is then used to train a local model whose 'weights' are shared. This multi-layered approach ensures privacy while still enabling collaborative learning for the AI.
Why it matters
This patent is significant because it addresses a major challenge in AI-driven education and training: how to leverage large datasets for model improvement while respecting data privacy. By using federated learning with simulated data, it allows multiple training centers to collaboratively enhance their adaptive training systems without directly sharing sensitive student information. This approach is particularly valuable for high-stakes training environments, such as aviation or medical simulation, where data privacy and robust AI models are critical.
Real-world examples
- 1.Flight simulators for pilot training
- 2.Medical training simulations for surgeons
- 3.Military training systems for complex equipment operation
- 4.Industrial process control training platforms
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US 11915111 · 2026